Packet #39624691 Success
POSITION_APP packet from dcn1 medfast (dcmf) to !ffffffff
45
Total Receptions
1
Unique Gateways
0
Hop Count
37
Payload Bytes
Packet Information
| Database ID: | 39624691 |
|---|---|
| Mesh Packet ID: |
0xfe5974ff
Used for correlation across gateways |
| Timestamp: | 2026-05-16 14:57:23 UTC |
| From Node: | dcn1 medfast (dcmf) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | DCmesh (mshd) |
|---|---|
| Channel: | ShortFast |
| RSSI: | -32 dBm |
| SNR: | 11.75 dBm |
| Hop Info: |
0/3 hops
Start: 3, Limit: 3 |
| Relay Node: |
e5
dcmf
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions |
Payload Data
Protocol: POSITION_APP
Size: 37 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 55.767859° |
|---|---|
| Longitude: | -120.242176° |
| Altitude: | 662 m |
| Satellites: | 9 |
| Precision: | 16 bits |
Raw Packet Analysis
Complete field breakdown and MQTT privacy/exposure analysisPacket Structure
MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)
| Total Size: | 37 bytes |
|---|---|
| Gateway: | !da627be0 |
| Channel: | ShortFast |
| Payload Type: | POSITION_APP |
| Hop Count: | Unknown / 3 |
Privacy Summary
Exposure Level:
Broadcast
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: ShortFast
+ 2 more...
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: ShortFast
+ 2 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields
MQTT ServiceEnvelope contains the MeshPacket plus routing metadata
| Field | Value |
|---|---|
gateway_id |
!da627be0
Node ID format |
channel_id |
ShortFast
|
packet |
MeshPacket (37 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
1474778853
Source node ID |
uint32 |
to |
4294967295 (Broadcast)
Visible to all nodes |
uint32 |
decoded.portnum |
3
POSITION_APP |
enum |
decoded.payload_length |
37 bytes
|
size |
hop_limit |
3
Remaining hops allowed |
uint32 |
hop_start |
3
Initial hop limit |
uint32 |
hops_taken |
0
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
-32.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
11.75 dB
Signal quality at gateway |
float |
rx_time |
1778943439
Receive timestamp |
fixed32 |
via_mqtt |
False
Direct LoRa transmission |
bool |
want_ack |
False
No ACK requested |
bool |
priority |
Not set | enum |
delayed |
Not set | enum |
channel |
Not set | uint32 |
pki_encrypted |
False
Standard encryption |
bool |
next_hop |
Not set | uint32 |
relay_node |
229
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1778943443.9838853
Unix timestamp |
uint32 |
MQTT Privacy & Exposure Analysis
Analysis of privacy features and exposure risks when packet is shared via MQTT
Exposure Level: Broadcast
Privacy Features:
- ✓ Direct LoRa transmission (not via MQTT)
- ✓ Custom channel: ShortFast
- ✓ Gateway node ID tracked
- ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
- ⚠ Visible to all nodes on channel
- ⚠ Packet visible to MQTT subscribers
- ⚠ Full GPS precision shared
- ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
| Gateway ID: | !da627be0 |
| Position Precision: | 16 bits (~364.0m accuracy) |
| Position precision meters: | 364.0 |
| Zero Hop Policy: |
Enabled
Direct gateway connection |
| Signal Metrics: |
RSSI: -32.0 dBm SNR: 11.75 dB |
Complete Payload Analysis
Detailed breakdown of all payload fields and decoded data
Payload Metadata:
| Protocol: | POSITION_APP |
|---|---|
| Size: | 37 bytes |
| Decoded: | Yes |
Complete Payload Data (JSON):
{
"latitude": 55.7678592,
"longitude": -120.242176,
"altitude": 662,
"sats_in_view": 9,
"precision_bits": 16
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!da627be0",
"channel_id": "ShortFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 1474778853,
"to": 4294967295,
"id": 4267275519,
"rx_time": 1778943439,
"rx_snr": 11.75,
"rx_rssi": -32,
"hop_limit": 3,
"hop_start": 3,
"via_mqtt": false,
"want_ack": false,
"priority": 0,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 229,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d00803d2115008054b818960525dc85086a28025884017801800198989902980109b80110",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 557678592,
"longitude_i": -1202421760,
"altitude": 662,
"time": 1778943452,
"location_source": "LOC_INTERNAL",
"PDOP": 132,
"ground_speed": 1,
"ground_track": 4607000,
"sats_in_view": 9,
"precision_bits": 16,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (37 bytes)
0d00803d2115008054b818960525dc85086a28025884017801800198989902980109b80110
Hex Analysis:
| Size: | 37 bytes |
|---|---|
| Format: | Protobuf (Protocol Buffers) |
| Encoding: | Binary with varint and length-delimited fields |
This is the raw protobuf-encoded payload as received from MQTT.
The structure follows the Meshtastic protobuf schema definitions.
All Receptions
All gateways that received this packetCorrelation: Using Mesh Packet ID
Reception Locations
Loading...
Loading reception map...
Map shows gateway locations that received this packet. Hop counts are displayed if available.
| Gateway | Time Offset | RSSI | SNR | Hops | Relay | Channel | Timestamp | Actions |
|---|---|---|---|---|---|---|---|---|
| DCmesh (mshd) Primary |
0.000s
Reference |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | Current |
| DCmesh (mshd) |
-1.458s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:22 UTC | View |
| DCmesh (mshd) |
-1.150s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:22 UTC | View |
| DCmesh (mshd) |
-1.138s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:22 UTC | View |
| DCmesh (mshd) |
-1.124s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:22 UTC | View |
| DCmesh (mshd) |
-0.726s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.706s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.693s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.681s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.668s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.646s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.633s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.621s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.608s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.593s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.581s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.570s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.185s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.166s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.153s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.139s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.126s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.113s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
MediumFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.098s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.086s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.059s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.044s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.029s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
-0.014s
Before |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:23 UTC | View |
| DCmesh (mshd) |
+0.020s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.035s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.048s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.066s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortFast | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.080s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.107s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.127s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.138s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.149s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.161s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.172s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.186s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.197s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.208s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.225s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
ShortTurbo | 2026-05-16 14:57:24 UTC | View |
| DCmesh (mshd) |
+0.238s
After |
-32.0 dBm | 11.75 dB | 0 |
e5
dcmf
|
LongFast | 2026-05-16 14:57:24 UTC | View |
45
Total Receptions
1
Unique Gateways